Perhaps you should try some spelling variations:
cau trieu » cac trieu, cau triet, chua trieu
hanh lai » hanh lam, hanh tai, thanh lap
cua viet » ca viet, hoa viet, cua vat
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va nhan » van nhan, ca nhan, va phan
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang xa hoi. lieu va nhan ((luc va) OR (tuc va)) hanh lai ((cau trieu) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang xa hoi. lieu va nhan ((luc va) OR (tuc va)) hanh lai ((cau trieu) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang xa hoi. lieu va nhan ((luc va) OR (tuc va)) hanh lai ((cau trieu) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang xa hoi. lieu va nhan ((luc va) OR (tuc va)) hanh lai ((cau trieu) or (cua viet))*.