Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi canh » thi hanh, thi anh, thi oanh
va trien » va truyen, va tuyen, va tieng
hanh lam » thanh lap, hanh kem, dinh lam
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
canh xa » canh va, canh tac, canh tay
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thi canh xa hoi. hieu ve cam tuc va ((hanh lam) or (hanh va)) ((va trien) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi canh xa hoi. hieu ve cam tuc va ((hanh lam) OR (hanh va)) ((va trien) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: tu sach thi canh xa hoi. hieu ve cam tuc va ((hanh lam) or (hanh va)) ((va trien) or (va thiet))*.