Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
cham luc » cham soc, nhan luc, cham cuu
te sach » toc sach
nang ma » tang ma, nang cao, mang may
lai cua » dai cua, hai cua, lai chau
sang ma » tang ma, sang tao, mang may
va hanh » van hanh, va thanh, va danh
hieu ve » hieu van
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((nang ma) OR (sang ma)) hoi. ((hieu ve) or (hieu va)) cham luc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (sang ma)) hoi. ((hieu ve) OR (hieu va)) cham luc va hanh lai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang ma) OR (sang ma)) hoi. ((hieu ve) or (hieu va)) cham luc va hanh lai cua te*".