Perhaps you should try some spelling variations:
thieu nien » thien nhien
hieu vien » hieu hien, hieu viec, hieu tieng
thu dang » thu bang, thu dong, thu sang
thu hang » thi hang, thuc hanh, thu huong
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hanh di » hanh vi, hanh de, hang di
cac duc » cac du, cao duc, cac dac
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu dang) or (thu hang)) ky lang xa hoi. ((hieu vien) or (thieu nien)) cac duc va hanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu dang) OR (thu hang)) ky lang xa hoi. ((hieu vien) OR (thieu nien)) cac duc va hanh di cua tu.
• Adding a wildcard symbol may retrieve word variants: ((thu dang) or (thu hang)) ky lang xa hoi. ((hieu vien) or (thieu nien)) cac duc va hanh di cua tu*.