Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ve triet » va trien, su triet
hanh tai » thanh tai, hang tai, hinh tai
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
han tai » hang tai, nhan tai, van tai
bo sach » co sach, hoc sach
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
cac tu » cac thu, cach tu, cac du
tu xa » tu xay, tu va, te xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ty nang ma hoi. hieu ve cac tu xa ((thanh lap) or (((hanh tai) OR (han tai)))) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ty nang ma hoi. hieu ve cac tu xa ((thanh lap) OR (((hanh tai) OR (han tai)))) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ty nang ma hoi. hieu ve cac tu xa ((thanh lap) or (((hanh tai) OR (han tai)))) ve triet".
• Adding a wildcard symbol may retrieve word variants: bo sach ty nang ma hoi. hieu ve cac tu xa ((thanh lap) or (((hanh tai) OR (han tai)))) ve triet*.