Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, chat lua
thi nang » thi cong, ki nang, thi hanh
va thanh » gia thanh, ban thanh, va tinh
cham cuu » cap cuu, chat cua
sach thi » sach thu, sach tai, sach thieu
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thi nang ma hoi. hieu va ((cham luc) or (cham cuu)) va thanh ((di cua) OR (de cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thi nang ma hoi. hieu va ((cham luc) OR (cham cuu)) va thanh ((di cua) OR (de cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thi nang ma hoi. hieu va ((cham luc) or (cham cuu)) va thanh ((di cua) OR (de cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach thi nang ma hoi. hieu va ((cham luc) or (cham cuu)) va thanh ((di cua) OR (de cua)) tre*.