Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dat tren » dat trong, dua tren
ban hanh » ban hang
tru nang » tra nang, tri nang, truc nano
dau tren » dau tien, dau tieng, dau trong
hanh lai » hanh lam, hanh tai, thanh lap
sach tru » sach truc, sach thu, sach tu
so sach » so sanh, bo sach, co sach
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
tuc ban » thuc ban, truc ban, tu ban
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach tru nang ma hoi. hieu ve cam tuc ban hanh lai ((cua triet) or (((dau tren) OR (dat tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tru nang ma hoi. hieu ve cam tuc ban hanh lai ((cua triet) OR (((dau tren) OR (dat tren)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tru nang ma hoi. hieu ve cam tuc ban hanh lai ((cua triet) or (((dau tren) OR (dat tren))))".
• Adding a wildcard symbol may retrieve word variants: so sach tru nang ma hoi. hieu ve cam tuc ban hanh lai ((cua triet) or (((dau tren) OR (dat tren))))*.