Perhaps you should try some spelling variations:
tinh dinh » trinh dinh, tinh ninh, tinh binh
dinh cuu » dinh chi
thi nang » thi cong, ki nang
than luc » nhan luc, than duc, thanh luu
thi hanh » thi thanh
van than » van thanh, van thang, van tuan
thi van » thi lan
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
hoc anh » hoc nganh, hoc nhanh, ngoc anh
luc va » duc va, tuc va, loc va
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hoach) or (hoc anh)) ((thi nang) or (thi hanh)) va hoi. thi van than luc va tinh dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (hoc anh)) ((thi nang) OR (thi hanh)) va hoi. thi van than luc va tinh dinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (hoc anh)) ((thi nang) or (thi hanh)) va hoi. thi van than luc va tinh dinh cuu tre*.